830
FXUS65 KBYZ 090713
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
113 AM MDT THU APR 9 2026
KEY MESSAGES
- SEASONAL TEMPS TODAY, THEN WARMING FRIDAY & SATURDAY; HIGHS IN
THE 70S TO NEAR 80 DEGREES ON SATURDAY.
- AN INCREASING CHANCE OF SHOWERS LATE SATURDAY AFTERNOON &
EVENING.
- TURNING COOLER AND WETTER (I.E. AN ACTIVE WEATHER PATTERN)
SUNDAY INTO NEXT WEEK.
DISCUSSION
THROUGH NEXT WEDNESDAY...
INCREASING HEIGHTS BEGIN TO ENTER THE REGION FRIDAY AND SATURDAY
LEADING TO WARM AND DRY CONDITIONS. TEMPERATURES WILL RISE FROM
THE 50S TODAY INTO THE 60S BY FRIDAY AND 70S BY SATURDAY.
TEMPERATURES OF 20 DEGREES ABOVE AVERAGE OR MORE AND MINIMUM
RELATIVE HUMIDITY VALUES IN THE TEENS AND TWENTIES SATURDAY COULD
LEAD TO GRASS FIRE CONCERNS. WINDS WILL BE THE BIGGEST FACTOR IN
DETERMINING RISK AS STRONG WINDS ARE NOT EXPECTED SATURDAY. THE
GREATEST GRASS FIRE RISK WILL BE FOR THE WESTERN FOOTHILLS WHERE
THE DRIEST CONDITIONS ARE LOCATED AND WHERE THERE IS A 50-90%
CHANCE OF GETTING A WIND GUST OVER 40 MPH.
ENSEMBLE SYSTEMS ARE THEN INDICATING A PATTERN CHANGE STARTING
LATE SATURDAY WITH A CHANGE TO COOLER AN DRIER CONDITIONS THROUGH
THE MIDDLE OF NEXT WEEK. PERSISTENT 500 MB TROUGHING OVER THE
WESTERN CONUS WILL PUT THE REGION IN SOUTHWEST FLOW AND WELL
PLACED TO RECEIVE UPPER LEVEL WAVES EJECTING FROM THIS MAIN
TROUGH. THIS PATTERN WILL BRING 40-80% CHANCES FOR PRECIPITATION
LATE SATURDAY THROUGH EARLY TUESDAY. THE DETAILS OF THIS SYSTEM
ARE NOT CLEAR AS THERE IS THE POTENTIAL FOR MULTIPLE WAVES THAT
ENSEMBLES HAVE YET TO COME INTO GOOD AGREEMENT ON. THE BOTTOM LINE
IS THAT NEXT WEEK WILL LIKELY FEATURE ACTIVE WEATHER. THERE IS
CURRENTLY A 40-80% CHANCE OF GETTING GREATER THAN 0.25 INCHES OF
PRECIPITATION FOR THE LATE SATURDAY THROUGH EARLY TUESDAY
TIMEFRAME. TEMPERATURES ARE EXPECTED TO DECREASE INTO THE 50S AND
60S FOR THE EARLY TO MID- WEEK PERIOD.
AVIATION
EAST OF KBIL, EXPECT MID AND HIGH LEVEL CLOUDS TO INCREASE THIS
MORNING AS A WEATHER SYSTEM DROPS THROUGH THE REGION. THERE IS A
LOW CHANCE (10-20%) OF LIGHT SNOW OVER EASTERN MONTANA, INCLUDING
KMLS AND KBHK, THROUGH LATE MORNING. WINDS WILL TURN NORTHERLY AND
SKIES WILL BEGIN TO CLEAR THIS AFTERNOON. ARCHER
PRELIMINARY POINT TEMP/POPS
TDY FRI SAT SUN MON TUE WED
-------------------------------------------------------
BIL 057 033/067 044/078 047/068 042/052 037/059 039/066
0/U 00/B 12/R 45/R 78/T 53/W 11/B
LVM 059 031/065 043/071 042/063 037/053 034/057 035/061
0/U 02/R 13/R 37/T 67/W 52/W 12/W
HDN 058 031/071 041/081 046/071 041/053 034/060 036/068
0/U 00/B 12/R 65/R 89/T 64/W 11/U
MLS 054 029/067 043/081 048/068 040/051 032/055 036/065
1/B 00/U 01/B 53/R 67/W 42/W 01/U
4BQ 054 030/066 045/080 048/070 042/055 034/054 035/064
0/B 00/U 11/B 42/R 47/T 63/W 11/U
BHK 049 026/060 038/077 046/068 038/052 031/051 031/062
1/B 00/U 00/B 32/R 37/T 42/W 01/U
SHR 054 029/067 041/074 041/068 037/052 032/054 031/063
0/U 00/B 12/R 53/R 58/T 65/W 11/U
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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